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Slag forming and properties
ArticleName Influence of stabilizers on the composition and structure of metallurgical slag
DOI 10.17580/chm.2023.12.07
ArticleAuthor A. N. Bodyakov, I. Yu. Markova, V. V. Strokova, M. A. Stepanenko

Belgorod State Technological University named after. V. G. Shukhov, Belgorod, Russia

A. N. Bodyakov, Head of the Laboratory of the Dept. of Roads and Railways named after. A. M. Gridchin, e- mail:
I. Yu. Markova, Cand. Eng., Associate Prof., Dept. of Materials Science and Technology, e-mail:
V. V. Strokova, Dr. Eng., Prof., Director of the Innovative Scientific, Educational and Experimental Industrial Center for Nanostructured Composite Materials, e-mail:
M. A. Stepanenko, Engineer of the 2nd Category, Innovative Scientific, Educational and Experimental Industrial Center for Nanostructured Composite Materials, e-mail:


The composition of metallurgical slags is complex and is determined by several factors, including the type of received metal, the composition of the ore and the composition of the flux material used in the melting process, the temperature of the melting process. However, it should be considered that most metallurgical slags are liable to the process of self–decomposition, which is associated with the presence of bicalcium silicate (C2S – white) in the slag structure. The paper studies the effect of three different stabilizers (ferrochromium ore, sodo-alkaline melting and arc steelmaking furnaces dust) on the structure and properties of metallurgical slag selected from an arc steelmaking furnace. A comparison of the efficiency of using three stabilizers radically different in composition in terms of the yield of the stabilized slag fraction, depending on the amount of stabilizer and the structural features of the materials obtained, allowed us to establish that arc steelmaking furnaces dust allows us to obtain the largest amount of the stabilized slag fraction with a dense homogeneous structure and the best quality indicators (at 5 % concentration in the slag melt in laboratory conditions, it is possible to obtain 100 % stabilized slag fraction with water saturation of 4.6 % and frost resistance mark F 50, whereas in industrial conditions 2 % is enough). Comparison of energy dispersion analysis maps of a slag sample stabilized with arc steelmaking furnaces dust in industrial conditions showed some differences compared to laboratory samples, which is explained by two factors affecting the crystallization process: the rate of nucleation, the rate of crystal growth. In industrial conditions, the rate of nucleation is higher, which contributes to the formation of a larger number of new crystallization centers, but the intensity of crystal growth decreases after the slag is drained into the slag trench, which is associated with the cooling rate.

The study was supported by the Russian Science Foundation grant No. 23-19-00796, https:// The work was carried out using the equipment of the Center for High Technologies on the basis of BSTU named after V. G. Shukhov.

keywords Metallurgical slags, stabilization, ferrochromium ore, sodo-alkaline melting, electric arc furnace dust, poirosity, water saturation, cold resistance

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